Source Code Cross Referenced for MapUtil.java in  » GIS » geonetwork » org » wfp » vam » intermap » services » map » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » GIS » geonetwork » org.wfp.vam.intermap.services.map 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        //=============================================================================
002:        //===	Copyright (C) 2001-2007 Food and Agriculture Organization of the
003:        //===	United Nations (FAO-UN), United Nations World Food Programme (WFP)
004:        //===	and United Nations Environment Programme (UNEP)
005:        //===
006:        //===	This program is free software; you can redistribute it and/or modify
007:        //===	it under the terms of the GNU General Public License as published by
008:        //===	the Free Software Foundation; either version 2 of the License, or (at
009:        //===	your option) any later version.
010:        //===
011:        //===	This program is distributed in the hope that it will be useful, but
012:        //===	WITHOUT ANY WARRANTY; without even the implied warranty of
013:        //===	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
014:        //===	General Public License for more details.
015:        //===
016:        //===	You should have received a copy of the GNU General Public License
017:        //===	along with this program; if not, write to the Free Software
018:        //===	Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
019:        //===
020:        //===	Contact: Jeroen Ticheler - FAO - Viale delle Terme di Caracalla 2,
021:        //===	Rome - Italy. email: geonetwork@osgeo.org
022:        //==============================================================================
023:
024:        package org.wfp.vam.intermap.services.map;
025:
026:        import java.net.URLDecoder;
027:        import java.util.ArrayList;
028:        import java.util.Collections;
029:        import java.util.HashMap;
030:        import java.util.List;
031:        import java.util.StringTokenizer;
032:        import jeeves.server.UserSession;
033:        import jeeves.server.context.ServiceContext;
034:        import org.jdom.Element;
035:        import org.wfp.vam.intermap.Constants;
036:        import org.wfp.vam.intermap.kernel.map.DefaultMapServers;
037:        import org.wfp.vam.intermap.kernel.map.MapMerger;
038:        import org.wfp.vam.intermap.kernel.map.mapServices.BoundingBox;
039:        import org.wfp.vam.intermap.kernel.map.mapServices.MapService;
040:        import org.wfp.vam.intermap.kernel.map.mapServices.arcims.ArcIMSService;
041:        import org.wfp.vam.intermap.kernel.map.mapServices.wmc.schema.type.WMCExtension;
042:        import org.wfp.vam.intermap.kernel.map.mapServices.wmc.schema.type.WMCLayer;
043:        import org.wfp.vam.intermap.kernel.map.mapServices.wmc.schema.type.WMCViewContext;
044:        import org.wfp.vam.intermap.kernel.map.mapServices.wmc.schema.type.WMCWindow;
045:        import org.wfp.vam.intermap.kernel.map.mapServices.wms.CapabilitiesStore;
046:        import org.wfp.vam.intermap.kernel.map.mapServices.wms.WmsService;
047:
048:        public class MapUtil {
049:            private static int _minh;
050:            private static int _minw;
051:            private static int _maxh;
052:            private static int _maxw;
053:
054:            private static String defaultImageSize;
055:
056:            private static String url;
057:
058:            public static void setImageSizes(int minh, int minw, int maxh,
059:                    int maxw) {
060:                _minh = minh;
061:                _minw = minw;
062:                _maxh = maxh;
063:                _maxw = maxw;
064:            }
065:
066:            // Returns the MapMerger object for the user session
067:            public static MapMerger getMapMerger(ServiceContext context) {
068:                MapMerger mm = (MapMerger) context.getUserSession()
069:                        .getProperty(Constants.SESSION_MAP);
070:                if (mm == null)
071:                    mm = new MapMerger();
072:
073:                return mm;
074:            }
075:
076:            public static void setAoi(ServiceContext context, float minx,
077:                    float miny, float maxx, float maxy) throws Exception {
078:                BoundingBox bb = new BoundingBox(maxy, miny, maxx, minx);
079:
080:                UserSession us = context.getUserSession();
081:                us.setProperty("aoi", bb);
082:            }
083:
084:            protected static BoundingBox getAoi(ServiceContext context)
085:                    throws Exception {
086:                UserSession us = context.getUserSession();
087:                return (BoundingBox) us.getProperty("aoi");
088:            }
089:
090:            protected static void unsetAoi(ServiceContext context)
091:                    throws Exception {
092:                UserSession us = context.getUserSession();
093:                us.setProperty("aoi", new BoundingBox(0, 0, 0, 0)); // there is no way at the moment to set it null or delete it
094:            }
095:
096:            protected static void setActiveLayer(Element request, MapMerger mm)
097:                    throws Exception {
098:                StringTokenizer t = new StringTokenizer(request
099:                        .getChildText("activeLayer"), "_");
100:                try {
101:                    mm.setActiveLayer(Integer.parseInt(t.nextToken()), Integer
102:                            .parseInt(t.nextToken()));
103:                } catch (Exception e) {
104:                } // Who cares?
105:            }
106:
107:            protected static void setVisibleLayers(Element request, MapMerger mm) {
108:                for (Element param : (List<Element>) request.getChildren()) {
109:                    String key = param.getName();
110:                    String value = param.getText();
111:                    StringTokenizer t = new StringTokenizer(key, "_");
112:                    if (t.hasMoreTokens()) {
113:                        if (t.nextToken().equals("layerVisible")) {
114:                            String serviceId = t.nextToken();
115:                            String layerId = t.nextToken();
116:                            MapService ms = mm.getService(Integer
117:                                    .parseInt(serviceId));
118:                            if (ms != null) {
119:                                boolean visible = value.equals("true");
120:                                ms.setLayerVisible(layerId, visible);
121:                            }
122:                        }
123:                    }
124:                }
125:            }
126:
127:            private static boolean existService(MapMerger mm, String serverUrl,
128:                    String serviceName) {
129:                // Do not add the service if it is already there
130:                for (MapService service : mm.getServices()) {
131:                    String url = service.getServerURL();
132:                    String name = service.getName();
133:                    if (url.equals(serverUrl) && name.equals(serviceName))
134:                        return true;
135:                }
136:
137:                return false;
138:            }
139:
140:            /**
141:             * Add a WMCLayer ad a service.
142:             * WMCLayer decoding is processed here.
143:             */
144:            public static int addService(MapMerger mm, WMCLayer layer)
145:                    throws Exception {
146:                int id = addService(WmsService.TYPE, layer.getServer()
147:                        .getOnlineResource().getHref(), layer.getName(), "", // layer.getChildText("vendor_spec_par"); // DEBUG
148:                        mm);
149:
150:                WMCExtension ext = layer.getExtension();
151:                if (ext != null) {
152:                    Element et = ext.getChild("Transparency");
153:                    if (et != null)
154:                        mm.setTransparency(id, Float.parseFloat(et.getText()));
155:                }
156:
157:                return id;
158:            }
159:
160:            /**
161:             * @return the id of the service, or -1 if the service has not been added
162:             */
163:            public static int addService(int serverType, String serverUrl,
164:                    String serviceName, String vsp, MapMerger mm)
165:                    throws Exception {
166:                // Do not add the service if it is already there
167:                if (existService(mm, serverUrl, serviceName))
168:                    return -1;
169:
170:                int ret;
171:
172:                switch (serverType) {
173:                case ArcIMSService.TYPE:
174:                    ret = mm.addService(new ArcIMSService(serverUrl,
175:                            serviceName));
176:                    break;
177:
178:                case WmsService.TYPE:
179:                    //				Element capabilities = WmsGetCapClient.getCapabilities(serverUrl);   // Old version: we may need it in snv commit
180:                    Element capabilities = CapabilitiesStore
181:                            .getCapabilities(serverUrl); // NEW VERSION: WORK IN PROGRESS
182:                    WmsService s = new WmsService(serverUrl, serviceName,
183:                            capabilities);
184:                    ret = mm.addService(s);
185:                    setVendorSpecificParams(s, vsp);
186:                    break;
187:
188:                default:
189:                    throw new IllegalArgumentException("Unknown serverType "
190:                            + serverType + " for service " + serviceName
191:                            + " @ " + serverUrl);
192:                }
193:
194:                return ret;
195:            }
196:
197:            private static void setVendorSpecificParams(WmsService service,
198:                    String params) {
199:                if (params == null)
200:                    return;
201:
202:                String stParams = URLDecoder.decode(params);
203:
204:                HashMap hmParams = new HashMap();
205:                StringTokenizer t1;
206:                for (t1 = new StringTokenizer(stParams, "&"); t1
207:                        .hasMoreTokens();) {
208:                    String s = t1.nextToken();
209:                    int p = s.indexOf("=");
210:
211:                    if (p != -1) {
212:                        String name = s.substring(0, p);
213:                        //				System.out.println("name:" + name);
214:                        String value = s.substring(p + 1, s.length());
215:                        //				System.out.println("value: " + value);
216:
217:                        hmParams.put(name, value);
218:                    }
219:                }
220:
221:                //		System.out.println("hmParams: " + hmParams);
222:                service.setVendorSpecificParams(hmParams); //TEST
223:            }
224:
225:            public static void setDefaultContext(MapMerger mm) throws Exception {
226:                Element mapContext = DefaultMapServers.getDefaultContext();
227:
228:                // Add each layer in the map context to the map
229:                for (Element elServer : (List<Element>) mapContext
230:                        .getChildren("server")) {
231:                    String serverType = elServer
232:                            .getAttributeValue(Constants.MAP_SERVER_TYPE);
233:                    String serverUrl = elServer
234:                            .getAttributeValue(Constants.MAP_SERVER_URL);
235:
236:                    for (Element elLayer : (List<Element>) elServer
237:                            .getChildren(Constants.MAP_LAYER)) {
238:                        try {
239:                            String serviceName = elLayer
240:                                    .getAttributeValue("name");
241:                            MapUtil.addService(Integer.parseInt(serverType),
242:                                    serverUrl, serviceName, "", mm);
243:                        } catch (Exception e) {
244:                            e.printStackTrace();
245:                        } // DEBUG: tell the user
246:                    }
247:                }
248:
249:                MapUtil.setDefBoundingBox(mm);
250:            }
251:
252:            public static void setDefBoundingBox(MapMerger mm) throws Exception {
253:                List<BoundingBox> lbb = new ArrayList<BoundingBox>();
254:                for (MapService service : mm.getServices())
255:                    lbb.add(service.getDefBoundingBox());
256:
257:                mm.setBoundingBox(BoundingBox.union(lbb));
258:            }
259:
260:            protected static void setBBoxFromUrl(String bbox, MapMerger mm) {
261:                StringTokenizer st = new StringTokenizer(bbox, ",");
262:
263:                try {
264:                    float w = Float.parseFloat(st.nextToken());
265:                    float s = Float.parseFloat(st.nextToken());
266:                    float e = Float.parseFloat(st.nextToken());
267:                    float n = Float.parseFloat(st.nextToken());
268:
269:                    mm.setBoundingBox(new BoundingBox(n, s, e, w));
270:                }
271:
272:                catch (Exception e) {
273:                    mm.setBoundingBox(new BoundingBox());
274:                }
275:            }
276:
277:            /**
278:             * @deprecated ETj: image dimensions are no longer handled server side
279:             */
280:            public static int getImageWidth(ServiceContext srvContext) {
281:                String size = (String) srvContext.getUserSession().getProperty(
282:                        Constants.SESSION_SIZE);
283:                int width;
284:                if (size.equals("small"))
285:                    width = _minw;
286:                else
287:                    width = _maxw;
288:
289:                return width;
290:            }
291:
292:            /**
293:             * @deprecated ETj: image dimensions are no longer handled server side
294:             */
295:            public static int getImageHeight(ServiceContext srvContext) {
296:                String size = (String) srvContext.getUserSession().getProperty(
297:                        Constants.SESSION_SIZE);
298:                int height;
299:                if (size.equals("small"))
300:                    height = _minh;
301:                else
302:                    height = _maxh;
303:
304:                return height;
305:            }
306:
307:            // Returns the MapMerger object for the user session
308:            static String getTool(ServiceContext srvContext) {
309:                String tool = (String) srvContext.getUserSession().getProperty(
310:                        Constants.SESSION_TOOL);
311:                if (tool == null)
312:                    tool = Constants.DEFAULT_TOOL;
313:
314:                return tool;
315:            }
316:
317:            public static void setTempUrl(String url) {
318:                MapUtil.url = url;
319:            }
320:
321:            public static String getTempUrl() {
322:                return MapUtil.url;
323:            }
324:
325:            protected static void moveTo(BoundingBox bb, int x, int y,
326:                    int width, int height) throws Exception {
327:                float mapX = bb.getWest() + (bb.getEast() - bb.getWest()) * x
328:                        / width;
329:                float mapY = bb.getNorth() - (bb.getNorth() - bb.getSouth())
330:                        * y / height;
331:                bb.moveTo(mapX, mapY);
332:            }
333:
334:            protected static BoundingBox move(BoundingBox bb, int deltaX,
335:                    int deltaY, int width, int height) throws Exception {
336:                float mapX = (bb.getEast() - bb.getWest()) * (float) deltaX
337:                        / width;
338:                float mapY = (bb.getNorth() - bb.getSouth()) * (float) deltaY
339:                        / height;
340:                return bb.move(mapX, mapY);
341:            }
342:
343:            protected static BoundingBox zoomInBox(BoundingBox bb, int mapimgx,
344:                    int mapimgy, int mapimgx2, int mapimgy2, int imageWidth,
345:                    int imageHeigth) throws Exception {
346:
347:                // Move and zoom
348:                float mapX = bb.getWest() + (bb.getEast() - bb.getWest())
349:                        * mapimgx / imageWidth;
350:                float mapY = bb.getNorth() - (bb.getNorth() - bb.getSouth())
351:                        * mapimgy / imageHeigth;
352:                float mapX2 = bb.getWest() + (bb.getEast() - bb.getWest())
353:                        * mapimgx2 / imageWidth;
354:                float mapY2 = bb.getNorth() - (bb.getNorth() - bb.getSouth())
355:                        * mapimgy2 / imageHeigth;
356:
357:                return new BoundingBox(mapY2, mapY, mapX2, mapX);
358:            }
359:
360:            protected static BoundingBox zoomOutBox(BoundingBox bb,
361:                    int mapimgx, int mapimgy, int mapimgx2, int mapimgy2,
362:                    int imageWidth, int imageHeight) throws Exception {
363:
364:                // Move and zoom
365:                float north = bb.getNorth() + (bb.getNorth() - bb.getSouth())
366:                        * imageHeight / (mapimgy - mapimgy2);
367:                float south = bb.getSouth() - (bb.getNorth() - bb.getSouth())
368:                        * imageHeight / (mapimgy - mapimgy2);
369:                float east = bb.getEast() + (bb.getEast() - bb.getWest())
370:                        * imageWidth / (mapimgx2 - mapimgx);
371:                float west = bb.getWest() - (bb.getEast() - bb.getWest())
372:                        * imageWidth / (mapimgx2 - mapimgx);
373:
374:                //		System.out.println("north : " + north + "; south = " + south + "; east = " + east + "; west = " + west);
375:
376:                return new BoundingBox(north, south, east, west);
377:            }
378:
379:            public static BoundingBox setScale(BoundingBox bb, int imageWidth,
380:                    int imageHeight, long scale, float dpi) throws Exception {
381:                float cx = (bb.getEast() + bb.getWest()) / 2;
382:                float cy = (bb.getNorth() + bb.getSouth()) / 2;
383:
384:                // Set the scale
385:                double degScale = scale / 423307109.727 * 96f / dpi;
386:                float dx = (float) (imageWidth * degScale);
387:                float dy = (float) (imageHeight * degScale);
388:
389:                return new BoundingBox(cy + dy / 2, cy - dy / 2, cx + dx / 2,
390:                        cx - dx / 2);
391:            }
392:
393:            public static void setDefaultImageSize(String s) {
394:                defaultImageSize = s;
395:            }
396:
397:            public static String getDefaultImageSize() {
398:                return defaultImageSize;
399:            }
400:
401:            public static String setContext(MapMerger mm, WMCViewContext vc)
402:                    throws Exception {
403:                for (WMCLayer layer : vc.getLayerList()) {
404:                    try {
405:                        MapUtil.addService(mm, layer);
406:                    } catch (Exception e) {
407:                        e.printStackTrace();
408:                    }
409:                }
410:
411:                // set bounding box
412:                mm.setBoundingBox(new BoundingBox(vc.getGeneral()
413:                        .getBoundingBox()));
414:
415:                WMCWindow win = vc.getGeneral().getWindow();
416:                String imagename = mm.merge(win.getWidth(), win.getHeight());
417:                String url = MapUtil.getTempUrl() + "/" + imagename;
418:
419:                return url;
420:            }
421:        }
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